Podcast Income Calculator

How it works

Podcast sponsorships are sold on CPM, which is the price a sponsor pays per thousand downloads for one ad slot. Your income is that rate multiplied out across every slot you actually sell, so four numbers drive it: how many people download an episode, how many slots each episode carries, how often you publish, and the share of those slots that find a buyer.

• downloads ÷ 1,000 — thousands of downloads, the unit a CPM is priced in
• CPM — what one slot earns per thousand downloads
• slots × episodes — total ad inventory you publish in a month
• fill % — the share of that inventory that actually sells

With the defaults, 5,000 downloads at a $25 CPM is $125 per filled slot. Two slots across four episodes is eight slots a month, but only 60% sell, so 4.8 of them pay: about $600 a month, or $7,200 a year, which is $150 an episode. Notice how far that sits below the headline download number. The fill rate is doing the damage, and it is the lever most shows ignore.

✓ Every result is checked against independent reference math. See how we test the calculators →

A worked example: 5,000 downloads at a $25 CPM

Say each episode pulls 5,000 downloads, you sell at a $25 CPM, and you run two ad slots across four episodes a month. Each filled slot is worth $125, and you publish eight slots a month. But at a 60% fill rate only 4.8 of them actually sell, so the show brings in about $600 a month, $7,200 a year, or $150 an episode. That is a lot less than the download number seems to promise, and the fill rate is why.

Now change nothing about your audience and just sell better. Push the fill rate from 60% to 90% and the same show, same downloads, same CPM, earns $900 a month and $10,800 a year. Not one new listener arrived; the sales side simply caught up with the audience that was already there. Unsold slots pay zero, so every point of fill rate is money you were leaving on the table.

Put in your own downloads, slots, CPM, and the share of slots you honestly sell, and watch how hard the fill rate pulls on the result before you count on any of it.

Fill rate is the silent killer

Everyone obsesses over downloads and CPM. The number that actually decides your paycheck is fill rate, because an unsold slot earns exactly zero. It does not earn a smaller amount. It earns nothing, and the ad still plays as a house promo or dead air.

At the defaults, a 60% fill rate brings $600 a month. Lift it to 90% by pitching sponsors harder or joining an ad marketplace and the same show, same downloads, same CPM, jumps to $900 a month and $10,800 a year. That is a 50% raise earned entirely from inventory you already had. This is why the honest headline for most podcasts is that they make far less than their download count suggests. A show quoting a $25 CPM and 5,000 downloads sounds like it prints money on paper, but paper assumes every slot sells, and almost none do at the start. Track your fill rate as closely as your downloads, because it is the difference between a rate card and a bank balance.

Pre-roll, mid-roll, and why the middle pays most

Not all ad slots are worth the same, and the position in the episode is why. There are three, and sponsors price them differently for a simple reason: how likely a listener is to still be there when the ad plays.

• Pre-roll runs before the content. It is easy to skip and easy to talk over, so it usually carries the lowest CPM of the three.
• Mid-roll drops into the middle of the episode. A listener who has stayed that long is engaged and unlikely to bail, which is why mid-roll commands the premium and is the slot worth protecting.
• Post-roll runs at the end, after many listeners have moved on, so it pays the least and sometimes goes unsold entirely.

If your slots pay different rates, blend them into the single CPM here weighted by how each performs. Loading up on cheap pre-roll and post-roll to pad your slot count rarely beats selling one well-placed mid-roll at a strong rate.

A download is not a listen, and small can beat big

Treat the download number with suspicion. It is a fuzzy metric: a download can be an automatic fetch from an app that never gets played, a partial stream, or the same person across two devices. Networks count it their own ways, so a CPM quoted against downloads is already softer than it sounds. This is one reason the estimate here should be read as a ceiling to negotiate under, not a promise.

It also explains a counterintuitive truth: a small, tightly targeted audience often out-earns a big general one. A niche show whose listeners all care about the same thing can sell direct sponsorships, affiliate deals, listener support, or a premium feed at rates a broad CPM network will never match, because the sponsor is buying relevance, not raw reach. For most independent shows, those direct relationships beat programmatic CPM ads on the same downloads. Use this calculator for the CPM floor, then treat everything you can sell directly as the upside that actually makes podcasting pay.